.page-contact {
  background: var(--field);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏联络路径带 ---------- */

.page-contact .ct-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(64px, 9vw, 120px) 0 clamp(52px, 7vw, 88px);
  background: var(--night);
}

.page-contact .ct-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-contact .ct-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-contact .ct-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(5, 11, 10, 0.96) 0%, rgba(10, 29, 24, 0.88) 46%, rgba(6, 58, 49, 0.5) 100%);
}

.page-contact .ct-hero__inner {
  position: relative;
}

.page-contact .ct-hero__title {
  margin: 18px 0 0;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-contact .ct-hero__lede {
  margin: 22px 0 0;
  max-width: 40ch;
  color: var(--ink-dim);
}

.page-contact .ct-routes {
  list-style: none;
  margin: clamp(40px, 5vw, 64px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .ct-route {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 22px 24px;
  background: rgba(10, 29, 24, 0.88);
  transition: background 0.22s ease;
}

.page-contact .ct-route:hover,
.page-contact .ct-route:focus-within {
  background: rgba(16, 44, 36, 0.98);
}

.page-contact .ct-route--main {
  background: rgba(16, 44, 36, 0.94);
  box-shadow: inset 0 3px 0 0 var(--cyan);
}

.page-contact .ct-route__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .ct-route__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.3;
  color: var(--ink);
}

.page-contact .ct-route__desc {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-contact .ct-route__fit {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-contact .ct-route__contact {
  margin: auto 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-contact .ct-route__k {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-dim);
}

.page-contact .ct-route__v {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
  word-break: break-all;
}

/* ---------- 区块标题 ---------- */

.page-contact .ct-head {
  display: grid;
  gap: 12px;
}

.page-contact .ct-head__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.34em;
  color: var(--cyan);
}

/* ---------- 咨询准备 ---------- */

.page-contact .ct-prep {
  background: var(--field);
}

.page-contact .ct-prep__grid {
  margin-top: clamp(32px, 4vw, 48px);
}

.page-contact .ct-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .ct-item {
  border-top: 1px solid var(--line);
}

.page-contact .ct-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-item__label {
  display: grid;
  grid-template-columns: 22px 1fr;
  grid-template-areas:
    "box idx"
    "box body";
  gap: 8px 16px;
  padding: 20px 0;
  cursor: pointer;
}

.page-contact .ct-item__box {
  grid-area: box;
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--raised);
  position: relative;
  cursor: pointer;
  transition: border-color 0.16s ease, background 0.16s ease;
}

.page-contact .ct-item__box:hover {
  border-color: var(--cyan);
}

.page-contact .ct-item__box:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-contact .ct-item__box:checked {
  border-color: var(--cyan);
  background: rgba(41, 240, 200, 0.14);
}

.page-contact .ct-item__box:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 1px;
  width: 5px;
  height: 11px;
  border: solid var(--cyan);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .ct-item__idx {
  grid-area: idx;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--copper);
}

.page-contact .ct-item__body {
  grid-area: body;
  display: grid;
  gap: 6px;
}

.page-contact .ct-item__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .ct-item__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-contact .ct-prep__tag {
  margin: 28px 0 0;
  font-size: 15px;
  line-height: 1.7;
}

/* 办公地址说明牌 */

.page-contact .ct-visit {
  padding: 22px 20px 18px;
  border: 1px solid rgba(198, 161, 92, 0.42);
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-glass);
}

.page-contact .ct-visit__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--copper);
}

.page-contact .ct-visit__addr {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .ct-visit__media {
  margin: 18px 0 0;
}

.page-contact .ct-visit__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--cyan);
  cursor: pointer;
  list-style: none;
}

.page-contact .ct-visit__summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-visit__summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--copper);
}

.page-contact .ct-visit__details[open] .ct-visit__summary::after {
  content: "\2013";
}

.page-contact .ct-visit__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .ct-visit__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-dim);
}

.page-contact .ct-visit__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 1px;
  background: var(--copper);
}

/* ---------- 响应节奏 ---------- */

.page-contact .ct-rhythm {
  position: relative;
  overflow: hidden;
  background: var(--night);
}

.page-contact .ct-rhythm::before {
  content: "";
  position: absolute;
  top: 0;
  left: -5%;
  width: 110%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan) 35%, var(--orange) 72%, transparent);
  transform: rotate(-3deg);
  opacity: 0.6;
}

.page-contact .ct-rhythm__grid {
  margin-top: clamp(32px, 4vw, 52px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.page-contact .ct-metric {
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-contact .ct-metric__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(38px, 6.4vw, 72px);
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

.page-contact .ct-metric--alt .ct-metric__num {
  color: var(--orange);
}

.page-contact .ct-metric__cap {
  margin: 12px 0 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--copper);
}

.page-contact .ct-metric__text {
  margin: 10px 0 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-dim);
}

.page-contact .ct-flow {
  margin-top: clamp(48px, 6vw, 84px);
  padding-top: 32px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 18px;
}

.page-contact .ct-flow__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--ink);
}

.page-contact .ct-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .ct-flow__list li {
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-contact .ct-flow__list li:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .ct-flow__i {
  display: inline-block;
  margin-right: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--copper);
}

/* ---------- 数据与内容协作 ---------- */

.page-contact .ct-collab {
  background: var(--field);
}

.page-contact .ct-collab__grid {
  display: grid;
  gap: 34px;
}

.page-contact .ct-collab__head {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-contact .ct-collab__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .ct-collab__item {
  padding: 18px 20px;
  background: var(--raised);
  border-left: 2px solid transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-contact .ct-collab__item:hover {
  border-left-color: var(--cyan);
  background: #143A2F;
}

.page-contact .ct-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(41, 240, 200, 0.4);
}

.page-contact .ct-link:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 页尾直连 ---------- */

.page-contact .ct-signoff {
  background: var(--field);
  padding-bottom: clamp(72px, 11vw, 150px);
}

.page-contact .ct-signoff__hint {
  margin: 0 0 26px;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--copper);
}

.page-contact .ct-signoff__line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 22px;
  margin: 0;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-contact .ct-signoff__line:last-of-type {
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-signoff__k {
  min-width: 84px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
}

.page-contact .ct-signoff__v {
  font-family: var(--font-mono);
  font-size: clamp(18px, 3vw, 30px);
  color: var(--ink);
  word-break: break-all;
}

.page-contact .ct-signoff__foot {
  margin: 26px 0 0;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-dim);
}

/* ---------- 响应式 ---------- */

@media (max-width: 879px) {
  .page-contact .ct-prep__grid {
    display: block;
  }

  .page-contact .span-rail {
    margin-top: 34px;
  }

  .page-contact .ct-hero__title {
    max-width: 100%;
  }
}

@media (min-width: 880px) {
  .page-contact .ct-routes {
    grid-template-columns: 1.7fr 1fr 1fr;
  }

  .page-contact .ct-route {
    padding: 32px 26px 28px;
  }

  .page-contact .ct-item__label {
    grid-template-columns: 22px 56px 1fr;
    grid-template-areas: "box idx body";
    align-items: start;
    gap: 4px 18px;
  }

  .page-contact .ct-item__idx {
    padding-top: 4px;
  }

  .page-contact .ct-rhythm__grid {
    grid-template-columns: 1.35fr 1fr 1fr;
    gap: 1px;
    background: var(--line);
  }

  .page-contact .ct-metric {
    padding: 26px 26px 30px;
    border-top: none;
    background: var(--night);
  }

  .page-contact .ct-flow {
    grid-template-columns: 220px 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-contact .ct-collab__grid {
    grid-template-columns: 320px 1fr;
    gap: 64px;
  }
}

@media (min-width: 1200px) {
  .page-contact .ct-route--main {
    padding-right: 40px;
  }

  .page-contact .ct-flow__list li {
    padding: 18px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-route,
  .page-contact .ct-collab__item,
  .page-contact .ct-item__box {
    transition: none;
  }
}